/*

* Copyright (c) 2004-2008 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

using System;

using System.Collections.Generic;

using System.Text;

using SymbianParserLib.Engine;

using SymbianParserLib.BaseStructures;

using CrashDebuggerLib.Structures.Scheduler;

using CrashDebuggerLib.Structures.Register;

using CrashDebuggerLib.Structures.UserContextTable;

using SymbianParserLib.Elements;

using SymbianParserLib.Enums;

namespace CrashDebuggerLib.Parsers.State.Implementation

{

    internal class StateInfoUserContextTable : State

    {

        #region Constructors

        public StateInfoUserContextTable( CrashDebuggerParser aParser )

            : base( aParser )

        {

        }

        #endregion

        #region API

        public override void Prepare()

        {

            ParserParagraph para = new ParserParagraph( "USERCONTEXTTABLE_INFO" );

            // The format of the actual entry specification is the same for each

            // line

            StringBuilder lineFormat = new StringBuilder(  );

            int count = UserContextTable.EntryCount;

            for( int i=0; i<count; i++ )

            {

                lineFormat.Append( "[%02x, %02x]" );

            }

            // Create one line per table

            int tableCount = CrashDebugger.UserContextTableManager.Count;

            for( int i=0; i<tableCount; i++ )

            {

                // Create line based upon dynamic format string

                string format = String.Format( KTablePrefixFormat, i, lineFormat.ToString() );

                ParserLine line = ParserLine.NewSymFormat( format );

                // Save the context table type - we need this in the callback later on

                line.Tag = (TUserContextType) i;

                // Make sure each field stores it's value internally, so that we can extract it

                // ourselves in the callback.

                line.SetTargetObject();

                // Get a callback when all fields are ready.

                line.ElementComplete += new ParserElementBase.ElementCompleteHandler( LineComplete );

                para.Add( line );

            }

            ParserEngine.Add( para );

        }

        public override void Finalise()

        {

            // Go through each field

            CrashDebugger.UserContextTableManager.Dump();

        }

        #endregion

        #region Properties

        #endregion

        #region Internal methods

        void LineComplete( ParserElementBase aElement )

        {

            ParserLine line = (ParserLine) aElement;

            TUserContextType tableType = (TUserContextType) line.Tag;

            UserContextTable table = CrashDebugger.UserContextTableManager[ tableType ];

            // Each line should have a known number of entries stored within it's field collection.

            int expectedCount = UserContextTable.EntryCount * 2; // 2 fields per table entry

            int actualCount = line.Count;

            if ( expectedCount == actualCount )

            {

                for ( int i = 0; i < expectedCount; i += 2 )

                {

                    ParserField fieldType = line[ i + 0 ];

                    ParserField fieldValue = line[ i + 1 ];

                    //

                    if ( fieldType.IsUint && fieldValue.IsUint )

                    {

                        UserContextTable.TArmRegisterIndex reg = (UserContextTable.TArmRegisterIndex) ( i / 2 );

                        UserContextTableEntry entry = table[ reg ];

                        //

                        UserContextTableEntry.TType type = (UserContextTableEntry.TType) fieldType.AsUint;

                        byte value = (byte) fieldValue.AsUint;

                        //

                        entry.Type = type;

                        entry.Offset = value;

                    }

                }

            }

            else

            {

                throw new Exception( "User Context Table Corruption" );

            }

        }

        #endregion

        #region Internal constants

        private const string KTablePrefixFormat = "Table[{0:d2}] = {1}";

        #endregion

        #region Data members

        private List<ParserLine> iLines = new List<ParserLine>();

        #endregion

    }

}